Barnard, Robert L.,  1932- <br/><br/>
Intrusion detection systems  principles of operation and application 
Robert L. Barnard 
 - Boston, [Mass.]  London  Butterworth  c1981 
 - 339 p.  ill., plans  24cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Burglar-alarms
<br/><br/><label>Dewey Class. No.: </label>621.389  / 2